Correct linker-wrapper script under Msys2 and Cygwin. Fixes #58

Author: SquallATF

plugin/src/main/resources/com/nishtahir/linker-wrapper.bat

@@ -1 +1,18 @@
+@echo off
+if defined SHELL (
+    where /q cygpath
+    if ERRORLEVEL 1 (
+        goto WINSHELL
+    )
+    for /f %%i in ('cygpath -w %SHELL%') do (
+        if exist "%%i" (
+            "%%i" -c 'RUST_ANDROID_GRADLE_CC="$(cygpath -u "${RUST_ANDROID_GRADLE_CC%%.*}")";^
+                      exec "$(cygpath -u "%~dp0linker-wrapper.sh")" "%*"'
+            exit !errorlevel!
+        )
+        exit 1
+    )
+)
+:WINSHELL
+@echo on
 "%RUST_ANDROID_GRADLE_PYTHON_COMMAND%" "%RUST_ANDROID_GRADLE_LINKER_WRAPPER_PY%" %*