Added support for an RTEMS RAP format application file. The format is:
<header>
<LZ77>
<Application Script>
<[1..n] ELF Object files>
</LZ77>
Where the header is a text string of fields delimited by ',' and terminated
with a line feed (\n). It is variable length:
RTEMS-APP,0000000,01.00.00,LZ77,00000000\n\0
where:
RTEMS-APP : file tag for quick acceptance and rejection
Length : the length of the application in bytes including the
: header
Version : Version of the application format.
Compress : The compression format.
Checksum : CCITT CRC32 checksum.
Following the header is a nul ('\0') character then an LZ77 container
with the application loader script followed by the ELF object files.
Note, the script format will be documented else where.
Note, the final version may add a 32bit length field before each part
in the compressed container to delimit the size of the file to be
read. This is currently not in this version.
The refactoring allows better reuse of the ELF support and cleans up
some hacks from the generic file and archive handling improving the
separation of the file handling from the file format, ie ELF. The
handling of ELF object files and ELF object files inside archives
is cleaner.
The refactor cleaned up the symbol handling where the symbols now
reside in the ELF file object and references are take in symbol
pointer containers and symbol table containers.
The main purpose of the refactor is to allow support for creating
and writing ELF files.
Also added an rtems-syms command where special symbol support
can be added.
