more idle code documentation improvement

afms/README

-External library.
+External package containing font metrics

android/README

+android specific code, wrapper logic and tests

avmedia/README

 Audio/Video media implementation.
 
-Needs a Java Media Framework (JMF).
-Not currently usable for streams but only for URIs in the file system.
+Provides per-platform implementations of multimedia functionality.
+Currently no stream API is provided, only a URI based one, so
+streaming has to be wrapped around it via temp files.

basic/README

-Contains the StarBASIC Interpreter and in addition the GUI of VCLTestTool.
+Contains the StarBASIC Interpreter
+
+This implements a macro language that, when in VBA compatibility mode,
+is intended to be interoperable with Visual Basic for Applications,
+allowing people to run macros embedded in their documents.
 
 See also:
 [http://wiki.services.openoffice.org/wiki/Basic]

berkeleydb/README

 The Berkeley database.
+
+This code is used primarily for legacy UNO component registration in
+the users' directory, for some small bits in xmlhelp, and for the help
+compiler.
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cairo/README

 The graphics library, used for anti-aliasing. From [http://cairographics.org/].
+
+This code is used by default only on Linux, though it is also
+available on Mac. There is a cairo-canvas implementation that is the
+main customer, and it is enabled via 'use hardware acceleration' in
+the general options.

chart2/README

 Chart implementation for LibreOffice Calc.
+
+The chart2 denotes a second generation re-write done to rid us of the
+foul and twisted legacy chart code.
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clucene/README

+External package containing clucene.
+
+This is used to index our downloadable help packages, and allow them
+to be searched efficiently at run-time.
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configmgr/README

 UNO services to access the configuration database
 
+== Functional Overview ==
+
+This code parses the settings that are described in the [[officecfg]]
+directory, and provides an UNO API that code can use to set and get
+settings.
 
 == Source Overview ==
 

dmake/README

+Obsolete dmake build tool.
+
+The dmake build tool was for years the backbone of building the
+codebase. Herein lies the bones of that effort - a patched, and fixed
+up version of dmake that mostly works even on Windows.
+
+It is now being incrementally written-out in favour of the faster
+gnumake approach.
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