Building swt.dll

Getting swt.dll to build and use the latest OpenJDK6 involved some
issues with GCC/2 v4.7.3/RPM. These have been resolved by Dmitriy,
many thanks!

Changes with regard to ealier 'quick hack' local builds:
o Merged changes from workdir.tmp to 'bundles'
  - workdir.tmp now regeneratable and thus discardable
o Added targets to 'GNUmakefile'
  - swtdll
  - classes
o Added stashed modifications to 'make_odin32.mak'
  - building swt.dll
  - resource stuff
o Simple hack to use short dll names under OS/2
  - Library.java
o Excluded Unicode Scripts Processor
  - defines.h
  - Device.java
o Map 'Get/SetWindowLongPtr[A|W]'
  - os.h
o Added resource file
  - swtrsrc.orc
o Added test snippet
  - Snippet1.java

Build and Run requirements:
o Requires the latest OpenJDK v1.6.0_27-b01-GA5
o Requires at least libc v0.6.5-20
o Requires 'odin32-swt' r22081 or higher

Using 'odin32-swt' revision: "Modified or replaced some structures"
http://trac.netlabs.org/odin32/changeset/22081/branches/swt
Building swt-awt.dll

This dll is used when spawning SWT from AWT.
Snippet337 demonstrates that.

Added Snippets:
o Snippet20  -- Button Bar with two buttons packed
o Snippet154 -- Embed a JTable in SWT
o Snippet245 -- Paint a circle on a canvas
o Snippet337 -- Launch an SWT window from AWT
  This snippet uses swt-awt.dll.
  It was modified to display the circle of Snippet245 instead of a
  browser object.

Using 'odin32-swt' revision: "Modified or replaced some structures"
http://trac.netlabs.org/odin32/changeset/22081/branches/swt