Until now we faked local variables -- they only worked correctly if
there was no overlap between local variables and global variables.
Use a symbol table stack instead of a string list.
Fix bug with looking up undefined symbols.
It makes it harder to deal with memory allocation.
Also fix bug in the otcc-ansi.c test, where the wrong part of the
code buffer was being mprotected, so that if the code buffer happened
to be allocated across a page boundary, some code would no receive
execute permission.
Set execute permission on code before running it.
Handle negative relative offsets for global variables.
Add printfs to report the progress of nested compiles.
Change way we detect whether we can run the host compiler
or not. We used to check if we were running on a 32-bit
Linux. Now we check if the executable is a 32-bit Linux
executable.
main(argc, argv) --> int main(int argc, char** argv)
Although we accept int, void, and char types, and pointers to same,
we actually still treat everything as an int.
Document internal CodeGenerator interface
Move license to a separate license file.
Define a public API for calling libacc.
Update the "acc" test program to use the public API.
Move "main.cpp" and test scripts into the tests subdirectory.
Move test data from tests to tests/data
Remove stale test data.
