Clarify runtime requirements and GLIBC version (#1823)

With Docker-based builds, we can now support all the way back to GLIBC 2.10.

LINUX_INSTALL.md

@@ -1,10 +1,10 @@
 # Linux Installation Instructions
 
 The minimum requirements are:
- - python 2.7 
- - glibc >= 2.11 (Centos >= 6, Ubuntu >= 10.04)
- - For Neural Network support, glibc >= 2.17 is needed (Centos >= 7 and Ubuntu >= 13.04)
- - libstdc++ >= 6.0.19 (Ubuntu >= 14.04 or equivalent, or newer libstdc++ installed on an older distribution)
+ - python 2.7, 3.5, or 3.6 (support for 3.7 pending #788)
+ - glibc >= 2.10 (Centos >= 6, Ubuntu >= 9.10, or equivalent)
+ - For Neural Network support, glibc >= 2.17 is needed (Centos >= 7, Ubuntu >= 13.04, or equivalent)
+ - libstdc++ >= 6.0.19 (Ubuntu >= 14.04 or equivalent, or GCC 4.8.3 or later)
  - libgconf-2-4 (on Ubuntu 17.10 and later)
 
 ## Ubuntu

README.md

@@ -70,7 +70,7 @@ Supported Platforms
 Turi Create supports:
 
 * macOS 10.12+
-* Linux (with glibc 2.12+)
+* Linux (with glibc 2.10+)
 * Windows 10 (via WSL)
 
 System Requirements
@@ -162,4 +162,4 @@ Prior to contributing, please review [CONTRIBUTING.md](CONTRIBUTING.md) and do
 not provide any contributions unless you agree with the terms and conditions
 set forth in [CONTRIBUTING.md](CONTRIBUTING.md).
 
-We want the Turi Create community to be as welcoming and inclusive as possible, and have adopted a [Code of Conduct](CODE_OF_CONDUCT.md) that we expect all community members, including contributors, to read and observe.
+We want the Turi Create community to be as welcoming and inclusive as possible, and have adopted a [Code of Conduct](CODE_OF_CONDUCT.md) that we expect all community members, including contributors, to read and observe.