Move -static-libgcc to LDFLAGS for Btls.

Fixes around 600 warnings.

mono.make

@@ -75,7 +75,7 @@ $$(BUILDDIR)/btls-$(1)/Makefile: $$(SRCDIR)/mono/mono/btls/CMakeLists.txt $$(SRC
 	$(RM_F) $$(@D)/CMakeCache.txt
 	mkdir -p $$(@D)
 	# wincrypt.h interferes with boringssl definitions, so we prevent its inclusion
-	cd $$(@D); $$(MINGW_ENV) CXXFLAGS="$$(PDB_CFLAGS_$(1))" LDFLAGS="$$(PDB_LDFLAGS_$(1))" cmake -DCMAKE_TOOLCHAIN_FILE="$$(SRCDIR_ABS)/toolchain-$(1).cmake" -DCMAKE_C_COMPILER=$$(MINGW_$(1))-gcc -DCMAKE_C_FLAGS='-D__WINCRYPT_H__ -D_WIN32_WINNT=0x0600 -static-libgcc $$(PDB_CFLAGS_$(1))' -DCMAKE_CXX_COMPILER=$$(MINGW_$(1))-g++ -DOPENSSL_NO_ASM=1 -DBTLS_ROOT="$$(SRCDIR_ABS)/mono/external/boringssl" -DBUILD_SHARED_LIBS=1 $$(SRCDIR_ABS)/mono/mono/btls
+	cd $$(@D); $$(MINGW_ENV) CXXFLAGS="$$(PDB_CFLAGS_$(1))" LDFLAGS="$$(PDB_LDFLAGS_$(1)) -static-libgcc" cmake -DCMAKE_TOOLCHAIN_FILE="$$(SRCDIR_ABS)/toolchain-$(1).cmake" -DCMAKE_C_COMPILER=$$(MINGW_$(1))-gcc -DCMAKE_C_FLAGS='-D__WINCRYPT_H__ -D_WIN32_WINNT=0x0600 $$(PDB_CFLAGS_$(1))' -DCMAKE_CXX_COMPILER=$$(MINGW_$(1))-g++ -DOPENSSL_NO_ASM=1 -DBTLS_ROOT="$$(SRCDIR_ABS)/mono/external/boringssl" -DBUILD_SHARED_LIBS=1 $$(SRCDIR_ABS)/mono/mono/btls
 
 $$(BUILDDIR)/btls-$(1)/.built: $$(BUILDDIR)/btls-$(1)/Makefile $$(MONO_BTLS_SRCS) $$(MINGW_DEPS)
 	+WINEPREFIX=/dev/null $$(MINGW_ENV) $$(MAKE) -C $$(BUILDDIR)/btls-$(1)