Files using libc string functions don't include neither <cstring> nor <string.h>

[Alex Yurchenko]

As a result on certain systems gcc complains about undeclared functions:

Ubuntu 9.10, gcc-4.4.1

$ make
g++ -g -O2 -Wall -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS
`mysql_config --include` -DMYSQL_ODBC -DODBC_WRAPPER -DUSE_PREPARE -
DCOMPILE_FLAT_FILE_LOAD -c ../src/CE.cpp -o ../obj/CE.o
In file included from ../src/../inc/SecurityFile.h:46,
                 from ../src/../inc/EGenTables_stdafx.h:63,
                 from ../src/../inc/EGenLoader_stdafx.h:65,
                 from ../src/../inc/CETxnInputGenerator.h:44,
                 from ../src/../inc/CE.h:110,
                 from ../src/CE.cpp:42:
../src/../inc/CompanyFile.h: In member function ‘void
TPCE::CCompanyFile::CreateName(TIdent, char*, size_t)’:
../src/../inc/CompanyFile.h:188: error: ‘strncpy’ was not declared in
this scope.