Move benchmarks into big folder

rename java files to input.java so that their input is read

provide output files for all tests

exec/big/bench_BigTensorProduct.inputc.out

+-264026752

exec/big/bench_binarytrees.java.out

+20
+-1
+1048576
+4
+-1048576
+262144
+6
+-262144
+65536
+8
+-65536
+16384
+10
+-16384
+4096
+12
+-4096
+1024
+14
+-1024
+256
+16
+-256
+64
+18
+-64
+19
+-1

exec/big/bench_fannkuchredux.java.out

+556355
+51

exec/big/bench_math.inputc.out

+120
+31839**4
+-1740920015
+-2013+-(((((((99507**4)*-(((72438*96575)*((-((67322+46322)*56165)*11280)+-4904))**6))+89334)+0758)+-(--86695!+-25)!)%38997)**3)
+1695610786
+(62104+45589)+-(((49052+3802)+-54717)*(((88999-93662)*88221)**7))
+138680
+7127--8720
+7495
+(((17638+-74979)**4)**7)**8
+0
+(((53659---((-(-(-(-59332!**8)*-(27446*82134))*-3493!)+((((---68524+71120)**8)-82078)%71767))**7))+--28989!!)-(-(-(1474!*(--35089**2))**9)!-73100))**6
+-752474543
+--88302/3825
+3
+(--35187+(((44737-47902)**3)!-60266))+87358
+97325
+-34737!----(20220+--15712)
+23953
+-6536**5
+1147628544