Correction to ConfigService test so that if a test fails and leaves a file, the next run of the test removes the file before starting the test. Re #1248

Fix ConfigService test. Linux/MAC are more forgiving about opening a file that is still open. Re #1248 

Allow property values within the ConfigService to be changed at run time. Added a function to save the current configuration to a file. Re #1248

Re-jig the ConfigService so that the logging doesn't start up until after the Mantid.user.properties file has been dealt with. Re #1161.

loggers are now defined in the algorithm base class, sumspectra is the only one to take advantage of this so far.  Possible mild memory leak reintroduced need to look at the release of the logger in the alg destructor.

Loggers should not leak now and can be disabled by calling setEnabledfalse)

Log the offending statement and then ignores the property. Fixes #553.

Changes to Properties files

Mantid now tries to load TWO properties files
Mantid.Properties as before
and now a Mantid.user.properties

Any entries in the user.properties file overides those on the main file.  The intention is that on reinstalls we will not overwrite the user file, but are free to replace the original .properties file to add new keys etc.

IMPORTANT:
The release properties files are now in the Properties subdirectory, the ones in the release directory have been removed.

Altered ConfigService so that relative path names are converted to absolute ones. Note that the original value is not actually altered but the call for a key is intercepted and a locally stored value is returned. Re #404

Remove the method in ConfigService that's causing a test failure on the Windows build server. Fixes #113.

Improved output date format to 2007-Dec-31 12:10:20

Added stream interfaces to the logger class

re #47

Added functionality in the configsvc to return the current directory

Updated logging formats

corrected bug in the what section of tests.
Changed solutions to link to the dll version of the C++ runtime

C++ is wierd re #21