Choose the right compiler according to VS settings per source file

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Create a random VC project which contains at least one source file with the 
file ending 'C' but which is marked as "compile as C++ code" (this can be set 
to any sourcefile per configuration in "configuration 
properties/c_c++/extended/type of compilation" of the files' properties.)
2. let makeItSo create the makefile
3. search the generated makefiles for the c-source which should be compiled as 
c++ code

What is the expected output? What do you see instead?
Instead of seeing $(C_COMPILER) used to compile these sort of files, i'm 
expecting to see $(CPP_COMPILER) there.

What version of the product are you using? On what operating system?
MakeItSo_1.2.2

Please provide any additional information below.
I assume the opposite (compile file with cpp-ending as c source) being equally 
impossible atm.

Original issue reported on code.google.com by [email protected] on 18 Nov 2014 at 3:29