updated version number in makedist script
+ fix Part.makeTube
Spreadsheet: Fix to prevent unwanted characters in spreadsheet cells
+ give more information when assigning wrong type to quantity property
Merge branch 'master' of ssh://git.code.sf.net/p/free-cad/code
Draft: Fixed escape() bug in Draft GUI
automatically find the OpenSCAD binary on Mac OS X
renable DRAWEXE exporter

This reverts commit 4c48bdf2166f273e60bcaf95281b7dde726db2f5.
support for Part::Loft in exportDRAWEXE
remove unused meshing paramters for exportCSG

releated to 382e055e9b2d3159de79e3f56ef452b538b51012