'strtod_l' is guarded by _GNU_SOURCE which gsoap fails to define on
musl and compilation reports warnings like this:
stdsoap2.c:16352:19: warning: implicit declaration of function 'strtod_l'; did you mean 'strtok_r'? [-Wimplicit-function-declaration]
*p = (float)strtod_l(s, &r, SOAP_LOCALE(soap));
^~~~~~~~
strtok_r
On most hard-float systems (x86_64 and mips*hf for sure) this code
will use some random garbage from the integer register.
...and update musl-fixes.patches to cover yet another attempt to
use glibc-style strerror_r() (triggered by _GNU_SOURCE).
The implicitly declared isatty() at soapcpp2_lex.c:1944 is ignored.
