[LSan] Add dynamic loading support for LSan library

[LSan] Add dynamic loading support for LSan library

The LSan library has very big static TLS section

Problem:
  - LSan library could not be loaded dynamically because it had a very
    big static TLS section.
        AllocatorCache: ~15KB for 32bit
                        ~53KB for 64bit
Solution:
  - Store in the TLS section only a pointer to the AllocatorCache and
    dynamically allocate memory for it.

Change-Id: I6e90e6682e277c90825938f5732867b6564d62b4
Signed-off-by: Vyacheslav Cherkashin <v.cherkashin@samsung.com>