ada: Fix spelling of functions with(out) "side effects"
Correct spelling does not include an hyphen. Fix comments and one
error message.
Also fix other mispellings of "side-effect" or "side effect" depending
on the case (adjective should have hyphen), and "side-effect-free" with
double hyphen as an adjective.
gcc/ada/
* checks.adb, exp_aggr.adb, exp_ch4.ads, exp_ch5.adb,
exp_util.adb, exp_util.ads, inline.adb, sem_ch13.adb,
sem_ch6.adb, sem_ch8.adb, sem_prag.adb, sem_util.ads: Fix comments
and typos.
- [DBH] gcc/ada/checks.adb
- [DBH] gcc/ada/exp_aggr.adb
- [DBH] gcc/ada/exp_ch4.ads
- [DBH] gcc/ada/exp_ch5.adb
- [DBH] gcc/ada/exp_util.adb
- [DBH] gcc/ada/exp_util.ads
- [DBH] gcc/ada/inline.adb
- [DBH] gcc/ada/sem_ch13.adb
- [DBH] gcc/ada/sem_ch6.adb
- [DBH] gcc/ada/sem_ch8.adb
- [DBH] gcc/ada/sem_prag.adb
- [DBH] gcc/ada/sem_util.ads