message: Use c11 for cygwin -std build
diff: @@ -41,7 +41,7 @@ IMPLIBLINKEXT = .dll.a
  #
  # Compiler and Linker Flags
  #
  -CFLAGS =
  +CFLAGS = -std=c99
  CFLAGS32 =
  CFLAGS64 =
  CXXFLAGS = -Wa,-mbig-obj -DPOCO_NO_FPENVIRONMENT -DPOCO_NO_WSTRING
  