MinGW: work around _FILE_OFFSET_BITS incomp between Berkeleydb and LO

berkeleydb/db-4.7.25.NC-mingw32hack.patch

+--- misc/db-4.7.25.NC/dist/configure	2012-03-30 00:25:17.456408946 +0200
++++ misc/build/db-4.7.25.NC/dist/configure	2012-03-30 00:24:44.344633205 +0200
+@@ -34776,7 +34776,7 @@
+   no | unknown) ;;
+   *)
+ cat >>confdefs.h <<_ACEOF
+-#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits
++#define _FILE_OFFSET_BITS 32
+ _ACEOF
+ ;;
+ esac

berkeleydb/makefile.mk

@@ -59,6 +59,12 @@ ADDITIONAL_FILES= \
 # not needed for win32. comment out when causing problems...
 .IF "$(GUI)$(COM)"=="WNTGCC"
 PATCH_FILES=db-4.7.25-mingw.patch
+PATCH_FILES += db-4.7.25.NC-mingw32hack.patch
+    # otherwise, db-4.7.25.NC/dist/configure decides for _FILE_OFFSET_BITS=64,
+    # which causes /usr/i686-w64-mingw32/sys-root/mingw/include/_mingw.h to not
+    # define _USE_32BIT_TIME_T, so that berkeleydb uses a 64 bit time_t while
+    # the rest of LibreOffice uses a 32 bit time_t, which causes problems as
+    # there is e.g. a member time_t timestamp of struct __db in db.h
 .ELSE
 PATCH_FILES=\
     db-4.7.25.patch \