Disable pointer optimizations

[thjomnx]

On some systems and with enabled optimizations, the code runs into segfaults at

__strcmp_evex () at ../sysdeps/x86_64/multiarch/strcmp-evex.S:316

in

bool WED_PropStringText::WantsAttribute(..)

at

src/WEDCore/WED_PropertyHelper.cpp:580

Until this is properly fixed, the suggestion is to switch them off to allow WED to load airports again.

---

Partial stacktrace of build_Debug in gdb:

Thread 1 "WED" received signal SIGSEGV, Segmentation fault.
__strcmp_evex () at ../sysdeps/x86_64/multiarch/strcmp-evex.S:316
316             VMOVU   (%rdi), %VMM(0)
(gdb) bt
#0  __strcmp_evex () at ../sysdeps/x86_64/multiarch/strcmp-evex.S:316
#1  0x0000555555dd83d6 in WED_PropStringText::WantsAttribute (this=0x555558d70360, ele=0x555558d6fe7c "hierarchy", att_name=0x555558d6f61f "name", att_value=0x555558d6fe86 "Facade 5 outer ring") at /home/menax/Projects/forks/xptools/src/WEDCore/WED_PropertyHelper.cpp:580
#2  0x0000555555dd6fbb in WED_PropertyHelper::StartElement (this=0x555558d702b0, reader=0x7fffffffbcb0, name=0x555558d6fe7c "hierarchy", atts=0x555558d6d3b0) at /home/menax/Projects/forks/xptools/src/WEDCore/WED_PropertyHelper.cpp:193
#3  0x0000555555f37690 in WED_Thing::StartElement (this=0x555558d70290, reader=0x7fffffffbcb0, name=0x555558d6fe7c "hierarchy", atts=0x555558d6d3a0) at /home/menax/Projects/forks/xptools/src/WEDEntities/WED_Thing.cpp:209
#4  0x0000555555ec16ca in WED_XMLReader::StartElementHandler (userData=0x7fffffffbcb0, name=0x555558d6fe7c "hierarchy", atts=0x555558d6d3a0) at /home/menax/Projects/forks/xptools/src/WEDCore/WED_XMLReader.cpp:90
[...]