change API for templated aaLiteral

- let the compiler pass keys and values as slices
  like for the existing _d_assocarrayliteralTX call

- add _aaGetZ which is the same as _aaGetX but also
  get's passed an additional pointer to the typed
  aaLiteral!(Key, Value) function
Fix overhead of trace_init being part of the first trace_pro call
Merge pull request #1048 from jcd/tracefix

Fix overhead of trace_init being part of the first trace_pro call
Merge pull request #1046 from MartinNowak/aaLiteral

change API for templated aaLiteral
Consider TLS_DTV_OFFSET when calculating the TLS range.

The dynamic thread vector (DTV) pointers may point 0x8000 past the start of
each TLS block. This is at least true for PowerPC and Mips platforms.
Merge pull request #1049 from redstar/elf

Consider TLS_DTV_OFFSET when calculating the TLS range.