Have ordinary threads reopen handles if they find them closed.
refs #156, closes #200
Move the "close_any_btree" logic into conn_btree.c
closes #156
Don't cache btree handles in the schema layer: always look up handles by name (usually from the session cache, so this isn't as bad as it sounds).
Function naming: btree_remove -> btree_discard.
Merge branch 'develop' into handle-locking

Conflicts:
	src/include/extern.h
Fix WT_BTREE_NO_LOCK on existing handles.
Handle locking cleanup from review feedback.
refs #207
Merge pull request #207 from wiredtiger/handle-locking

Allow btree handles to be closed even when cached by sessions.
Handle locking cleanup broke test_config03.
Have a real session attached to each connection handle.
closes #180
Move docs/src to src/docs.
#199

--HG--
rename : docs/Doxyfile => src/docs/Doxyfile
rename : docs/Makefile => src/docs/Makefile
rename : docs/src/architecture.dox => src/docs/architecture.dox
rename : docs/src/basic-api.dox => src/docs/basic-api.dox
rename : docs/build-javadoc.sh => src/docs/build-javadoc.sh
rename : docs/build-pydoc.sh => src/docs/build-pydoc.sh
rename : docs/src/command-line.dox => src/docs/command-line.dox
rename : docs/src/compression.dox => src/docs/compression.dox
rename : docs/src/config-file.dox => src/docs/config-file.dox
rename : docs/src/config-strings.dox => src/docs/config-strings.dox
rename : docs/src/cursor-ops.dox => src/docs/cursor-ops.dox
rename : docs/src/cursors.dox => src/docs/cursors.dox
rename : docs/src/data_sources.dox => src/docs/data_sources.dox
rename : docs/src/dump-formats.dox => src/docs/dump-formats.dox
rename : docs/src/examples.dox => src/docs/examples.dox
rename : docs/src/file-formats.dox => src/docs/file-formats.dox
rename : docs/src/home.dox => src/docs/home.dox
rename : docs/src/huffman.dox => src/docs/huffman.dox
rename : docs/images/LogoFace-watermark.png => src/docs/images/LogoFace-watermark.png
rename : docs/images/LogoFinal-header.png => src/docs/images/LogoFinal-header.png
rename : docs/images/architecture.pdf => src/docs/images/architecture.pdf
rename : docs/images/architecture.png => src/docs/images/architecture.png
rename : docs/src/install.dox => src/docs/install.dox
rename : docs/src/introduction.dox => src/docs/introduction.dox
rename : docs/src/keyvalue.dox => src/docs/keyvalue.dox
rename : docs/src/license.dox => src/docs/license.dox
rename : docs/src/namespace.dox => src/docs/namespace.dox
rename : docs/src/packing.dox => src/docs/packing.dox
rename : docs/src/processes.dox => src/docs/processes.dox
rename : docs/src/schema.dox => src/docs/schema.dox
rename : docs/src/security.dox => src/docs/security.dox
rename : docs/src/signals.dox => src/docs/signals.dox
rename : docs/src/snapshot.dox => src/docs/snapshot.dox
rename : docs/src/spell.ok => src/docs/spell.ok
rename : docs/src/sql-map.dox => src/docs/sql-map.dox
rename : docs/style/DoxygenLayout.xml => src/docs/style/DoxygenLayout.xml
rename : docs/style/background_navigation.png => src/docs/style/background_navigation.png
rename : docs/style/doxygen.png => src/docs/style/doxygen.png
rename : docs/style/footer.html => src/docs/style/footer.html
rename : docs/style/header.html => src/docs/style/header.html
rename : docs/style/img_downArrow.png => src/docs/style/img_downArrow.png
rename : docs/style/javadoc.css => src/docs/style/javadoc.css
rename : docs/style/tabs.css => src/docs/style/tabs.css
rename : docs/style/wiredtiger.css => src/docs/style/wiredtiger.css
rename : docs/src/threads.dox => src/docs/threads.dox
rename : docs/tools/doxypy.py => src/docs/tools/doxypy.py
rename : docs/tools/fixlinks.py => src/docs/tools/fixlinks.py
rename : docs/tools/pyfilter => src/docs/tools/pyfilter
rename : docs/src/transactions.dox => src/docs/transactions.dox
rename : docs/src/tuning.dox => src/docs/tuning.dox
rename : docs/src/using.dox => src/docs/using.dox
Fix copyright check for script in docs/src/tools.
Rename all metadata functions to start with "__wt_meta".
Merge branch 'develop' into feature/transactions