Compile error v44 of Partner WSDL: 'cannot find symbol' AdditionalInformationMap

When attempting to compile version 44.0 of the Partner WSDL, I am getting several 'cannot find symbol' errors regarding 'AdditionalInformationMap'.

Here is what the compile looks like:

```
$ java -jar target/force-wsc-44.0.0-uber.jar ~/Downloads/partner-44.0.xml ../MetadataIO/lib/force-partner-44.0.0.jar
[WSC][wsdlc.main:71]Generating Java files from schema ...
[WSC][wsdlc.main:71]Generated 664 java files.
[WSC][wsdlc.main:71]Compiling to target 1.6...
warning: [options] bootstrap class path not set in conjunction with -source 6
warning: [options] source value 6 is obsolete and will be removed in a future release
warning: [options] target value 1.6 is obsolete and will be removed in a future release
warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/MergeRequest.java:31: error: cannot find symbol
private com.sforce.soap.partner.AdditionalInformationMap[] additionalInformationMap = new com.sforce.soap.partner.AdditionalInformationMap[0];
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/MergeRequest.java:34: error: cannot find symbol
public com.sforce.soap.partner.AdditionalInformationMap[] getAdditionalInformationMap() {
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/MergeRequest.java:39: error: cannot find symbol
public void setAdditionalInformationMap(com.sforce.soap.partner.AdditionalInformationMap[] additionalInformationMap) {
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/IMergeRequest.java:14: error: cannot find symbol
public com.sforce.soap.partner.AdditionalInformationMap[] getAdditionalInformationMap();
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/IMergeRequest.java:16: error: cannot find symbol
public void setAdditionalInformationMap(com.sforce.soap.partner.AdditionalInformationMap[] additionalInformationMap);
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/MergeRequest.java:31: error: cannot find symbol
private com.sforce.soap.partner.AdditionalInformationMap[] additionalInformationMap = new com.sforce.soap.partner.AdditionalInformationMap[0];
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/MergeRequest.java:40: error: cannot find symbol
this.additionalInformationMap = castArray(com.sforce.soap.partner.AdditionalInformationMap.class, additionalInformationMap);
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/MergeRequest.java:48: error: cannot find symbol
setAdditionalInformationMap((com.sforce.soap.partner.AdditionalInformationMap[])__typeMapper.readObject(__in, _lookupTypeInfo("additionalInformationMap", "urn:partner.soap.sforce.com","additionalInformationMap","urn:partner.soap.sforce.com","AdditionalInformationMap",0,-1,true), com.sforce.soap.partner.AdditionalInformationMap[].class));
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
/var/folders/9p/cpfgp4z15nvd2583tfk87lzr0000gn/T/wsc-scratch10651298868956163952tmp/com/sforce/soap/partner/MergeRequest.java:48: error: cannot find symbol
setAdditionalInformationMap((com.sforce.soap.partner.AdditionalInformationMap[])__typeMapper.readObject(__in, _lookupTypeInfo("additionalInformationMap", "urn:partner.soap.sforce.com","additionalInformationMap","urn:partner.soap.sforce.com","AdditionalInformationMap",0,-1,true), com.sforce.soap.partner.AdditionalInformationMap[].class));
^
symbol: class AdditionalInformationMap
location: package com.sforce.soap.partner
9 errors
4 warnings
Error: Failed to compile
```

When I look at the Partner WSDL, I see 'AdditionalInformationMap' referenced in the 'MergeRequest' complex type:
```

```

However, 'AdditionalInformationMap' is not defined anywhere in the 'tns' namespace. I think the Partner WSDL generated from my org is incorrect. This looks like a Salesforce bug correct?

I am also attaching my WSDL.
[partner-44.0.txt](https://github.com/forcedotcom/wsc/files/2499229/partner-44.0.txt)