Fix build with static ecmult altroot and make dist. #275

1. 
   gmaxwell commented at 10:09 pm on July 15, 2015: contributor

   Gen_context was unable to find the required headers without some autotools fixups. Make dist was also broken without the extra sources for the host side table builder utility.
2. Fix build with static ecmult altroot and make dist.

   Gen_context was unable to find the required headers without some
    autotools fixups.  Make dist was also broken without the extra
    sources for the host side table builder utility.

   76f67697ec
3. 
   gmaxwell commented at 10:10 pm on July 15, 2015: contributor

   Fixes build problem for #274.
4. sipa merged this on Jul 15, 2015
5. sipa closed this on Jul 15, 2015

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6. sipa referenced this in commit 125c15de31 on Jul 15, 2015

Contributors
gmaxwell