lib/oelite: Sanity check variable names for space
lib/oelite: Sanity check variable names for space

Although not strictly necessary for parsed meta-data variables,
this check will catch Python code trying to set variables with
spaces.

Signed-off-by: Esben Haabendal <c5ba3f1141bb30a64dd6c7e6726a53a85adc9442@prevas.dk>

diorcety/oe-lite-core,hundeboll/core,diorcety/oe-lite-core,sknsean/core,sknsean/core,hundeboll/core,hundeboll/core,sknsean/core,hundeboll/core,sknsean/core,sknsean/core