Updated grok/C_C++/SystemsProgramming
Updated grok/C_C++/SystemsProgramming

 - Finished Chap 2 Stevens' book
 - Exercise 2.3 - common/spLimits.c -> long open_max(void)
   now returns OPEN_MAX_GUESS if OPEN_MAX == LONG_MAX
 - Changed OPRN_MAX_GUESS 256 -> 2048 since on Linux 4.20
   OPEN_MAX = 1024
 - Note: LONG_MAX = 9223372036854775807 on Linux 4.20

grscheller/scheller-linux-archive,grscheller/scheller-linux-archive,grscheller/scheller-linux-archive,grscheller/scheller-linux-archive,grscheller/scheller-linux-archive,grscheller/scheller-linux-archive,grscheller/scheller-linux-archive,grscheller/scheller-linux-archive