Unprotected symbol-table merge in InlineTrans

[arporter]

After performing inlining, we finally merge the symbol table of the local scope with that of the parent routine. This merge is not protected by a try...except so if it fails, PSyclone crashes:

PSyclone/src/psyclone/psyir/transformations/inline_trans.py

Lines 228 to 232 in 2307ac7

	if ancestor_table is not scope.symbol_table:
	ancestor_table.merge(scope.symbol_table)
	replacement = type(scope.symbol_table)()
	scope.symbol_table.detach()
	replacement.attach(scope)

Reproducer: psyclone -s examples/nemo/scripts/acc_kernels_trans.py ./icethd_sal.f90

[arporter]

We can workaround this by adding "ice_par" and "ice1d" to RESOLVE_IMPORTS in acc_kernels_trans. However, the bug remains. We could catch it and suggest this solution to the user...