Final --phy_simulators warning removals for this branch, and former polar coding function corrections

removing reference to uesoftmodem from load_configmodule (don't understand why this dependence is there in fist place. Also makes unitary sims break)

not all regression tests done (had to touch some header files)

When compiling in debug mode, the 'inline' semantics of C99 led to the errors:

/roux/w25/openairinterface5g/common/utils/LOG/log.c:479: undefined reference to `log_header'
libUTIL.a(log.c.o): In function `log_dump':
/roux/w25/openairinterface5g/common/utils/LOG/log.c:502: undefined reference to `log_header'
collect2: error: ld returned 1 exit status

Let's use static instead of inline.

Using valgrind revealed that those two arrays
were too small. Let's use 512 bytes, which should
be enough for every practical cases.

This includes damages check_vcd.c in the T tracer
(in develop branch).

Using the basic simulator and valgrind, it was found that
the lack of initialization of those two pointers leads to
some very nasty behavior of some other parts of the system.

This reverts commit 31821838.

don't fail in library utility function, return with error code instead and let
application decide what is best on how to proceed

* check whether a library has been loaded before; in this case, don't allocate
  new memory but load from old library again
* vital parameters, previous exit_fun are checked by AssertFatal()
* structure has changed a bit to make it easier to follow (instead of nested
  ifs includes one goto to the end of the function)
* formatting has been improved

This commit attempts to fix the error:
    no good visual found

Use common log mechanism in layer 3, mapping specific macros to common ones and extending common log utilities to support specific layer3 requirements