bugfix - work around error in solid_angle mex file for single precision inputs, see http://bugzilla.fcdonders.nl/show_bug.cgi?id=2369


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@8730 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0
automatically synchronized identical files to revision 8730

git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@8731 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0