Systrack

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**Improvements**:

- Make syscall symbol preference more consistent (in particular, stop mixing
`__se_sys_xxx` and `sys_xxx` when possible).
- Achieve W3C compliance for HTML output format.

**Bug fixes**:

- x86: correct wrong syscall numbers for x32 ABI, they should all be ORed with
`0x40000000` (`__X32_SYSCALL_BIT`).

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**Improvements**:

- Improve existing MIPS build and analysis support: use `ip27_defconfig` for
64-bit for NUMA support and strip more symbol prefixes.
- Improve dummy syscall implementation detection (x86-64, ARM).

**Bug fixes**:

- Fix help text for `--arch`: building with `--arch arm` creates an
EABI-only kernel.
- Fix a logging bug that caused not loging syscalls' `.origname` for not-found
locations after grepping.
- x86: use the right Kconfig option for vm86 and vm86old

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First release.