libwps: need to depend on unpacked private headers:

The generated cxx files that are built in the StaticLibrary depend on
the header from the UnpackedTarball.  When the tarball gets unpacked
again in an incremental build, the headers may have changed and the cxx
files that include them must be rebuilt.  This works for those headers
that are added to a Package, because they are make targets, but not for
those that are not delivered and just sit in the unpacked directory.
These need to be manually enumerated in order to turn them into make
targets, which is not entirely satisfying.

A little grepping in the .d file for the StaticLibrary can help:

 grep "UnpackedTarball.*\.h" workdir/*/Dep/LinkTarget/StaticLibrary/libwpslib.a.d | sed 's,:* \+[^ ]*$,,' | sed 's,^.*UnpackedTarball/[a-zA-Z0-9]*/,,' | sort | uniq

Change-Id: I9fd4ee0cd6646c834118cf172e39a24d2833c439

libwps/UnpackedTarball_wps.mk

@@ -20,6 +20,27 @@ $(eval $(call gb_UnpackedTarball_add_patches,wps,\
 
 $(eval $(call gb_UnpackedTarball_mark_output_files,wps,\
 	$(addsuffix .cpp,$(libwps_SOURCEFILES)) \
+	src/lib/libwps_internal.h \
+	src/lib/libwps_tools_win.h \
+	src/lib/WPS4Graph.h \
+	src/lib/WPS4.h \
+	src/lib/WPS4Text.h \
+	src/lib/WPS8.h \
+	src/lib/WPSCell.h \
+	src/lib/WPSContentListener.h \
+	src/lib/WPSDebug.h \
+	src/lib/WPSEntry.h \
+	src/lib/WPS.h \
+	src/lib/WPSHeader.h \
+	src/lib/WPSList.h \
+	src/lib/WPSOLEParser.h \
+	src/lib/WPSOLEStream.h \
+	src/lib/WPSPageSpan.h \
+	src/lib/WPSParagraph.h \
+	src/lib/WPSParser.h \
+	src/lib/WPSPosition.h \
+	src/lib/WPSSubDocument.h \
+	src/lib/WPSTable.h \
 ))
 
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