GNU make MSYS2 toolchain configuration added

config/Makefile.msys

@@ -0,0 +1,16 @@
+NAME = glew32
+# use gcc for linking, with ld it does not work
+CC := gcc
+LD := gcc
+LN :=
+LDFLAGS.GL = -lopengl32 -lgdi32 -luser32 -lkernel32
+LDFLAGS.EXTRA =
+LIBDIR = $(GLEW_DEST)/bin
+WARN = -Wall -W
+POPT = -O2
+BIN.SUFFIX = .exe
+LIB.SONAME    = lib$(NAME).dll
+LIB.DEVLNK    = lib$(NAME).dll.a   # for mingw this is the dll import lib
+LIB.SHARED    = $(NAME).dll
+LIB.STATIC    = lib$(NAME).a       # the static lib will be broken
+LDFLAGS.SO    = -shared -Wl,-soname,$(LIB.SONAME) -Wl,--out-implib,lib/$(LIB.DEVLNK)