Reverted to old OpenAL libraries

mingw32 libraries provided were compiled with a different GCC version (different computer) and seemed to be incompatible on linkage (missing symbols).
7 years ago · 0a3473a2a9
--- a/release/libs/win32/mingw32/OpenAL32.dll
+++ b/release/libs/win32/mingw32/OpenAL32.dll
--- a/release/libs/win32/mingw32/libOpenAL32.a
+++ b/release/libs/win32/mingw32/libOpenAL32.a
--- a/release/libs/win32/mingw32/libOpenAL32dll.a
+++ b/release/libs/win32/mingw32/libOpenAL32dll.a