Added scripts/prepare_mem_dryrun.py to prepare memory dry run

#!/bin/python3

import re, os, fnmatch

sub = ['free','malloc','calloc']

dirs = ['./lib_com','./lib_enc','./lib_dec','./lib_rend']

suffix = '*.c'

skip = 0

for d in dirs:

    print(d)

    for path, ds, files in os.walk(d):

        for filename in fnmatch.filter(files, suffix):

            fileIn = os.path.join(path, filename)

            with open(fileIn, 'r') as f_in:

                lines = f_in.readlines()

            with open(fileIn, 'w') as f_out:

                for line in lines:

                    if re.search(r'#define\W+WMC_TOOL_SKIP', line):

                        skip = 1

                    elif re.search(r'#undef\W+WMC_TOOL_SKIP', line):

                        skip = 0

                    else:

                        if not skip:

                            for s in sub:

                                line = re.sub(r'\b%s\b' % (s), '%s' % (s+'_'), line)

                    f_out.write(line)