Errors in zmq recipe

### Versions

* Python: 3.9
* OS: MacOS 11.7
* Buildozer: 1.4.0

### Description

1-
Get error when issuing `buildozer -v android debug`. As it does not seem to be related to buildozer but to the recipe, I post the issue here.
```
In file included from src/mtrie.cpp:32:
./src/generic_mtrie_impl.hpp:52:46: error: ISO C++ requires the name after '::~' to be found in the same scope as the name before '::~' [-Werror,-Wdtor-name]
template zmq::generic_mtrie_t::~generic_mtrie_t ()
~~~~~~~~~~~~~~~~~~~~~~~^~
::generic_mtrie_t

```
After fixing that one (see below), I get:
```
STDOUT:
Making install in doc
make[2]: warning: -jN forced in submake: disabling jobserver mode.
make[2]: Nothing to be done for `install-exec-am'.
make[2]: warning: -jN forced in submake: disabling jobserver mode.
config/install-sh -c -d '/Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/install/include'
config/install-sh -c -d '/Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/install/lib/pkgconfig'
config/install-sh -c -d '/Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/install/lib'
mkdir: /Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/install: File exists
mkdir: /Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/install: Not a directory
mkdir: /Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/install: File exists
mkdir: /Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/install/lib: Not a directory
mkdir: /Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/install: Not a directory
```

### buildozer.spec
Command:
```
buildozer -v android debug
```

Spec file:
```
requirements = pyzmq
```

1. Fix of 1st error

By editing `/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/src/generic_mtrie_impl.hpp`, changing line
```
template zmq::generic_mtrie_t::~generic_mtrie_t ()
```
to
```
template zmq::generic_mtrie_t::~generic_mtrie_t ()
```
2. Fix of 2nd error

By deleting file `/Users/yves/buildozer_dps/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libzmq/arm64-v8a__ndk_target_21/libzmq/INSTALL` (I thought Unix was case-sensitive...?)

Tái hiện bản build Android với thiết lập Python 3.9 đã nêu và `requirements = pyzmq` bằng `buildozer -v android debug`. Kiểm tra lỗi được đề cập trong `generic_mtrie_impl.hpp` và đường dẫn `INSTALL` libzmq được tạo ra để xác định liệu recipe hay các công cụ build của nó có gây ra cả hai lỗi hay không. Được xem là hoàn tất khi bản build hoàn thành mà không chỉnh sửa hoặc xóa thủ công các tệp được tạo ra.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.