mingw libparrot doublequoting error

[rurban]

g++ -o dynlexpad.dll "dynlexpad.o" $(LIBS) -Wl,-L "C:/DOCUME~1/MA
RK~1.GLI/test/blib/lib" -shared  ""C:/Documents and Settings/mark.glines/test\libparrot.dll""

 http://irclog.perlgeek.de/parrot/2009-02-05#i_888107 libparrot_ldflags => "\"$build_dir\\libparrot.dll\"", but dynpmc says # Paths need quoting as they may contain spaces. but the path is already quoted of course.

Since other platforms may also want to use spaces in the build_dir we should rather not special case this, and detect spaces in build_dir and quote them properly, not to have to add pathquotes all over.

destdir or any other targetdir spaces need to to be detected like this, since their are entered by the user and as such properly quoted by the user.

The first hand fix is at  http://nopaste.snit.ch/15504 for config/gen/makefiles/dynoplibs_pl.in only

[rurban]

First hand fix with r36399.

Spaces must be quoted in build_dir, but not other dirs. In reality, not only spaces in build_dir but all other qx() chars must be quoted in posix shells, in cmd.exe just surround it by "".