Update to SVN revision 1652526.

Resynchronize to openoffice-4 including:

• portlint fixes
• fix all but one stage-qa warning
• add source makefile patch to unbreak --with-system-jpeg
• add the --with-system-hyphen, --with-system-nss, --with-system-jpeg, and --with-system-mythes configure options
• remove the --with-system-saxon option to allow coexistance with math/scilab
• add all distfiles that were previously downloaded during build to the ext_sources distfile, and add --disable-fetch-external
• make the graphics/png dependency explicit
• change from USE_GCC=yes to USE_GCC=4.8 because of a compile error with gcc 4.9
• remove SVNREVISION from the ext_sources tarball name and tweak how it is extracted to allow it to be shared by multiple AOO releases
• remove trailing cruft from files/patch-sal (from pfg@)
• nuke files/patch-sal-inline (from pfg@)
• modernize MASTER_SITES syntax and update MASTER_SITE for unowinreg.dll
• unbreak sdk, package-canonical, and languagepack targets (from pfg@)
• don't truncate generated plist (from mat@)
• don't add @dirrm to generated plist, but add @dir for empty directories
• don't add license files to generated plist because the framework does this (from mat@)
• don't add a blank line to generated plist
• merge post-install target into do-install (from mat@)
• misc Makefile cleanup

PR: 192557
Differential Revision: https://reviews.freebsd.org/D1571
Reviewed by: pfg
Approved by: mat (mentor)