Bug 891: Determine sizeof(void*) via CMAKE variable instead of test program
(transplanted from 9e52b49b3a5801ce508121dc799edfb2cdeea468)

--HG--
branch : 3.2
extra : transplant_source : %9ER%B4%9B%3AX%01%CEP%81%21%DCy%9E%DF%B2%CD%EE%A4h