CompilandoPostgreSQLEnWindows: build-ext.bat

C:\mingw\bin\gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement  -Wendif-labels -fno-strict-aliasing -fwrapv  -I. -I. -I../../src/include -I./src/include/port/win32 -DEXEC_BACKEND  "-I../../src/include/port/win32"  -c -o foo.o foo.c
C:\mingw\bin\gcc -shared -o foo.dll foo.o