Skip input until a line begins with str.
The RecordReader to read from.
The string to look for, must begin with a char in isgraph
This function skips lines, and then non-graphical chars (see isgraph) at the line beginnings,
until it finds a line where the first string beginning with graph-characters is equal to str.
It stops behaind the string.
0 if there was no error reading
non-zero value on errors, especially EOF_BEFORE_SUCCESS
SeqAn - Sequence Analysis Library - www.seqan.de