Add support for setting the width of the overlay crosshair and rectangle. The default is 1, and can be increased in steps of 2 up until the size of the overlay. Add the Width records to the autosave req files. Make the Position and Size link fields optional.
Merge pull request #25 from areaDetector/sns_matt

Add support for setting the width of the overlay crosshair and rectangle...
Added WidthX and WidthY
documentation: add the new WidthX and WidthY params to the NDPluginOverlay documentation.
Minor improvements to Width documentation, reformatted
Fixed position of epicsExport.h
Fixed position of epicsExport.h
Fixed position of epicsExport.h
Fixed position of epicsExport.h
Fixed position of epicsExport.h
Fixed position of epicsExport.h
Fixed position of epicsExport.h
Fixed position of epicsExport.h
Fixed position of epicsExport.h
Fixed problem with dynamic linking; fixed compiler warnings
HDF5 plugin: added assert statement

To debug and ensure that chunkdims array is not accessed with an index < 0
Merge branch 'master' into heap_corruption_bug
HDF5 plugin: fix loop iteration when configuring dimensions