strcat help string does not mention concatenation

[hemebond]

Currently the extension output for strcat is:

string(string s1, optional string s2, optional string s3, optional string s4, optional string s5, optional string s6, optional string s7, optional string s8) strcat = #115; /* Part of FRIK_FILE, FTE_STRINGS, ZQ_QC_STRINGS*/

It should say what it does, mentioning that it "concatenates" strings, so it can be found by people looking for a function to concatenate strings.