Added and improved READMEs for modules which used to be in filter

filter/README

+Filter registration and some simple filters (also descriptions).

hwpfilter/REDME

+Filter for a word processor file format popular in Korea (Hangul Word Processor).

lotuswordpro/README

+Filter for file format of Lotus Word Pro.

oox/README

+Support for Office Open XML, the office XML-format designed by Microsoft.
+
+See also:
+[http://wiki.services.openoffice.org/wiki/OOX]

unoxml/README

+UNO wrappers for XML services.

writerfilter/README

-The writerfilter module contains import filters for Writer, using its
-UNO API.
+The writerfilter module contains import filters for Writer, using its UNO API.
 
-- inc: global headers (can be included by other modules)
-- prj: information for dmake
-- qa: unittests and subsequenttests
-- source: the filters themselves
+Import filter for docx, doc and rtf.
 
-  * dmapper: the domain mapper, hiding UNO from the tokenizers
-  * doctok: incomplete ww8 (.doc) tokenizer
-  * filter: the uno filter service implementations
-  * ooxml: the docx tokenizer
-  * rtftok: the rtf tokenizer
+== Module contents ==
+ * inc: global headers (can be included by other modules)
+ * prj: information for dmake
+ * qa: unittests and subsequenttests
+ * source: the filters themselves
+
+== Source contents ==
+ * dmapper: the domain mapper, hiding UNO from the tokenizers
+ * doctok: incomplete ww8 (.doc) tokenizer
+ * filter: the uno filter service implementations
+ * ooxml: the docx tokenizer
+ * rtftok: the rtf tokenizer

writerperfect/README

+Word Perfect filter, wrapper for [[libwpd]].

xmerge/README

+For converting documents among from and into formats and also for merging them.
+
+Uses Java and plug-in architecture.
+
+See also:
+[http://xml.openoffice.org/xmerge/]