Add -lole32 to link libraries.

This fixes a problem when compiling with mingw-headers version 3.3
where the use of SHGetFolderPath() expands to a call to CoTaskMemFree()
which is defined in libole32.dll:

/usr/x86_64-w64-mingw32/sys-root/mingw/include/shobjidl.h:29954: undefined reference to `__imp_CoTaskMemFree'

 ## Process this file with automake to produce Makefile.in

 pkgconfigdir = $(libdir)/pkgconfig

 pkgconfig_DATA = razor.pc

 bashcompletiondir = ${SYSCONFDIR}/bash_completion.d

 dist_bashcompletion_DATA = razor.sh

 clean-local :

 	rm -f *~